bob schieffer will interview senators saxby chambliss, clara mccomes skill and lindsay graham on face the nation. >>> in the wake of the bombing, the nation has come together to support the victims. that includes a sacramento couple who each lost a limb in the explosion. that is an exercise class helping raise money for the couple. there is a bay event for the aaron hearn and his family. donations are going to his recovery fund. those who can't participate can still donate on the website. >>> a lot of new questions right now about the new east stand of the bay bridge. >> a big story this week. the problem appears to be a question about bolts. how do they break and what's going to be done to fix them. >>> an environmental wrecking ball. they're using -- [indiscernible] >> federal plans to shut down an iconic oyster plant. >>> plenty of sun out there in the bay area today and temperatures warming up. we'll have the forecast. stay tuned. ,,,,,,,,,,,,,, >>> welcome back. it's 7:40. okay, in the north bay we've got an unusual fight that is pitting environmentalists against one another. >>